Responsivity of porous silicon for blue visible light with high sensitivity

Iftikhar M. Ali

doi:10.30723/ijp.v16i37.81

Article Details

Responsivity of porous silicon for blue visible light with high sensitivity

Authors:

Iftikhar M. Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.16 Issue 37, pp.98-107

Document Type:

Article

Publication Date:

11/2018

Document Language:

English

Document ID (Org No.):

2001369072

pISSN:

2664-5548

DOI:

10.30723/ijp.v16i37.81

Keywords:

Abstract:

 In this work, porous silicon (PS) are fabricated using electrochemical etching (ECE) process for p-type crystalline silicon (c-Si) wafers of (100) orientation. The structural, morphological and electrical properties of PS synthesized at etching current density of (10, 20, 30) mA/cm2 at constant etching time 10 min are studied. From X-ray diffraction (XRD) measurement, the value of FWHM is in general decreases with increasing current density for p-type porous silicon (p-PS). Atomic force microscope (AFM) showed that for p-PS the average pore diameter decreases at 20 mA. Porous silicon which formed on silicon will be a junction so I-V characteristics have been studied in the dark to calculate ideality factor (n), and saturation current (Is) for these junctions. These junctions are used in photo sensors applications, where the photo sensors have been examined at blue light region. Sensitivity, rise and fall times have been calculated for this wavelength, the maximum value for sensitivity is (3797.6 %) at etching current density 10 mA/cm2 under blue light illumination at zero bias voltage.

Article Details

Responsivity of porous silicon for blue visible light with high sensitivity

Authors:

Iftikhar M. Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.16 Issue 37, pp.98-107

Document Type:

Article

Publication Date:

11/2018

Document Language:

English

Document ID (Org No.):

2001369072

pISSN:

2664-5548

DOI:

10.30723/ijp.v16i37.81

Porous silicon

photo sensor

responsivity

sensitivity

Issues

Article Details

Responsivity of porous silicon for blue visible light with high sensitivity

Authors: Iftikhar M. Ali

Publisher: University of Baghdad

Journal: Iraqi Journal of Physics Vol.16 Issue 37, pp.98-107

Document Type: Article

Publication Date: 11/2018

Document Language: English

Document ID (Org No.): 2001369072

pISSN: 2664-5548

DOI: 10.30723/ijp.v16i37.81

Porous silicon

photo sensor

responsivity

sensitivity

Issues

Authors:

Iftikhar M. Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.16 Issue 37, pp.98-107

Document Type:

Article

Publication Date:

11/2018

Document Language:

English

Document ID (Org No.):

2001369072

pISSN:

2664-5548

DOI:

10.30723/ijp.v16i37.81